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EP0579528A1 - Soft intra-ocular implant lens - Google Patents

Soft intra-ocular implant lens Download PDF

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Publication number
EP0579528A1
EP0579528A1 EP93401744A EP93401744A EP0579528A1 EP 0579528 A1 EP0579528 A1 EP 0579528A1 EP 93401744 A EP93401744 A EP 93401744A EP 93401744 A EP93401744 A EP 93401744A EP 0579528 A1 EP0579528 A1 EP 0579528A1
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EP
European Patent Office
Prior art keywords
optical part
contact portion
optical
intraocular implant
implant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93401744A
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German (de)
French (fr)
Other versions
EP0579528B1 (en
Inventor
Aldo Duchesne
Philippe Bourgeois
Danielle Aron-Rosa
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CORNEAL
Original Assignee
CORNEAL
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Publication date
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Publication of EP0579528A1 publication Critical patent/EP0579528A1/en
Application granted granted Critical
Publication of EP0579528B1 publication Critical patent/EP0579528B1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/0008—Introducing ophthalmic products into the ocular cavity or retaining products therein
    • A61F9/0017—Introducing ophthalmic products into the ocular cavity or retaining products therein implantable in, or in contact with, the eye, e.g. ocular inserts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics

Definitions

  • the present invention relates to an intraocular implant made of a flexible material.
  • Intraocular implants are corrective systems for human vision which can, in a number of cases, replace contact lenses or external corrective lenses. In other cases, these implants can be combined for example with corrective lenses to obtain a suitable vision correction.
  • An intraocular implant essentially consists of an optical part of generally circular or slightly oval shape which forms the corrective optical system itself. It also includes a haptic part which is used for positioning and fixing the optical part inside the eye in the suitable position.
  • cataract operation is now most often performed using the operating technique known as phacoemulsification.
  • This technique allows the opaque lens to be removed by the introduction into the eye of an ultrasound probe with an irrigation / aspiration system. By the combined action of ultrasound and BBS flux, the lens is removed by emulsification.
  • This operating technique has the advantage over previous techniques of requiring only the making of an incision of reduced size in the cornea to introduce into the eye the material necessary for this ablation. It is therefore understandable that it is advantageous to have an intraocular implant which can be introduced into the interior of the eye and placed by the incision of reduced size which is only necessary during the operation of removal of the lens.
  • the incision must necessarily have a dimension sufficient to allow at least the optical part of the implant, the diameter of which is around 6 mm, to pass.
  • the production of the haptic part of the implant raises particular problems for ensuring proper fixation and positioning of the implant inside the eye, especially when this implant is placed in the capsular bag. It is understood in particular that it is necessary for the optical part to develop a sufficient holding force in order to avoid the risks of ejection of the implant out of the capsular bag.
  • An object of the present invention is to provide a monobloc intraocular implant, in particular for a capsular bag and made of a flexible material which comprises a haptic part ensuring positioning and maintenance of the implant improved compared to the art solution. prior.
  • the monobloc intraocular implant made of a flexible material and comprising a substantially circular optical part and a haptic part is characterized in that said haptic part comprises at least two fixing elements, each element comprising a portion of contact intended to come into contact with the internal wall of the eye and two connection arms for respectively connecting each end of a contact portion to the periphery of the optical part, each contact portion having substantially the shape of an arc -de-circle, the length of the cord underlying said arc being at least equal to the diameter of the optical part.
  • the optical part can be folded or rolled to facilitate the insertion of the implant into the eye.
  • the implant is properly held in the eye, which avoids the risks of ejection of the implant when it is placed in the capsular bag.
  • one of the faces of the haptic part is defined by a portion of toric surface whose axis is the axis of revolution of the optical part. So when the implant is placed in the capsular bag and subjected to pressure, the fastening elements are subjected to a winding effect which is similar to the arch effect that is encountered in type implants. classic with non-closed handle in C or J shape.
  • each connecting arm has a thickness in a direction perpendicular to the plane of the optical part which increases from the periphery of the optical part towards the contact portion and whose width in the plane of the optical portion decreases so that there is a substantially constant section of said arms.
  • the intraocular implant comprises an optical part 10 and two fixing elements 12 and 14.
  • the optical part 10 is circular and preferably its diameter D is equal to 6 mm.
  • the optical part is constituted in the example represented by two convex surfaces.
  • the optical part 10 has a thickness e which is, in the example considered, equal to 0.22 mm.
  • the entire implant is made in one piece and preferably in hydrogel.
  • the two fixing elements of the optical part 12 and 14 are identical and are symmetrical with respect to the axis XX 'passing through the center O of the optical part 10. We will therefore only describe the fixing element 12 of the haptic part .
  • the fixing element 12 is constituted by a contact portion 16 and by two connection arms respectively referenced 18 and 20 which connect the ends 16a and 16b of the contact portion at the periphery of the haptic part 10.
  • the neutral fiber of the contact portion is shown by C1, C2. This is of course centered at the center O of the optical part and the corresponding external diameter D 'is preferably equal to 11 mm.
  • one of the faces 12a, 14a of the fastening elements 12, 14 is disposed on a portion of the toric surface T shown in dotted lines.
  • This torus portion is defined by the rotation of a circle with center O 'and radius R1 around the axis ZZ'. During this rotation, the center O 'describes a circle of diameter D3.
  • the radius R1 is between 5 and 30mm and the diameter D3 is between 5 and 30mm.
  • the length of the cord C subtending the semicircle C1, C2 is at least equal to the diameter D of the optical part.
  • the connection arms 18 and 20 leave tangentially from the periphery 10a of the optical part to also connect tangentially to the ends of the contact portion 16 so as to avoid any angular point. If we consider all of the two arms 18 or the two arms 20, we see that their external contour 24 or 26 is concave and is tangentially connected to the periphery 10a of the optical part 10. We see that the connection arms 18 and 20 and of the contact portion 16 define a hollowed-out window 22.
  • the thickness e of the contact portion 16 in a direction perpendicular to the plane of the optical part 10 is equal to 0.45 mm. It is understood that consequently the connection arms have a thickness which increases from the periphery 10a of the optical part to the ends 16a and 16b of the contact portion 16. It can also be seen in FIG. 1 that the width of each arm 18 or 20 in the plane of the optical part 10 decreases from the periphery of the optical part to the ends of the contact portion. Arms are thus produced which have a substantially constant section, which gives them a substantially constant moment of inertia over their entire length.
  • the presence of the hollowed out windows 22 provides at least three advantages. On the one hand, it facilitates the folding of the implant around the diameter YY 'of the optical part constituting an axis of symmetry for the whole of the implant. On the other hand, it allows a deformation of the contact portions 16 which can thus adapt to different internal diameters of the eye or to the deformation of the capsular bag due to the removal of the lens. Finally, these windows allow the circulation of aqueous or vitreous humor from one side to the other of the implant.
  • the haptic part is constituted by two fixing elements. We would not depart from the invention if the haptic part consisted of three or four fixing assemblies. In all cases, the fixing assemblies are angularly distributed over the periphery of the optical part.
  • the invention exploits only the flexibility and pliability properties of the hydrogel and not its hydrophilic properties.
  • the implant according to the invention could therefore equally well be made of another flexible material such as silicone which is also well known for the production of intraocular implants.

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
  • Transplantation (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)

Abstract

The intra-ocular implant comprises a circular optical section (10) and a haptic section in the form of fixing elements (12,14). Each fixing element has a portion (16) to make contact with the inner wall of the eye, and two connecting arms (18,20) to link the ends (16a,16b) of the contact portion to the periphery of the optical section. Each contact portion is a circular arc (C1,C2) with the same centre as the optical section, and with a cord length (C) at least equal to the diameter of the optical section. Each of the arms increases in width and reduces in thickness from the fixing element to the optical section. The implant is made, for example, from hydrogel or silicone.

Description

La présente invention concerne un implant intra-oculaire réalisé en un matériau souple.The present invention relates to an intraocular implant made of a flexible material.

Les implants intra-oculaires constituent des systèmes correcteurs de la vision humaine qui peuvent, dans un certain nombre de cas, se substituer à des lentilles cornéennes ou à des verres correcteurs externes. Dans d'autres cas, ces implants peuvent être combinés par exemple avec des verres correcteurs pour obtenir une correction convenable de la vision. Un implant intra-oculaire se compose essentiellement d'une partie optique de forme générale circulaire ou légèrement ovalisée qui forme le système optique correcteur proprement dit. Il comporte également une partie haptique qui sert à la mise en place et à la fixation de la partie optique à l'intérieur de l'oeil dans la position convenable.Intraocular implants are corrective systems for human vision which can, in a number of cases, replace contact lenses or external corrective lenses. In other cases, these implants can be combined for example with corrective lenses to obtain a suitable vision correction. An intraocular implant essentially consists of an optical part of generally circular or slightly oval shape which forms the corrective optical system itself. It also includes a haptic part which is used for positioning and fixing the optical part inside the eye in the suitable position.

L'opération dite de la cataracte se pratique maintenant le plus souvent selon la technique opératoire dite de phaco-émulsification. Cette technique permet l'ablation du cristallin opaque par l'introduction dans l'oeil d'une sonde à ultra-sons disposant d'un système d'irrigation/aspiration. Par l'action combinée des ultra-sons et du flux de BBS, on vient retirer le cristallin par émulsification.The so-called cataract operation is now most often performed using the operating technique known as phacoemulsification. This technique allows the opaque lens to be removed by the introduction into the eye of an ultrasound probe with an irrigation / aspiration system. By the combined action of ultrasound and BBS flux, the lens is removed by emulsification.

Cette technique opératoire présente l'avantage par rapport aux techniques antérieures de ne nécessiter que la réalisation d'une incision de dimension réduite dans la cornée pour introduire dans l'oeil le matériel nécessaire à cette ablation. On comprend dès lors qu'il est intéressant de disposer d'implant intra-oculaire qui puisse être introduit à l'intérieur de l'oeil et mis en place par l'incision de dimension réduite qui est seule nécessaire lors de l'opération d'ablation du cristallin.This operating technique has the advantage over previous techniques of requiring only the making of an incision of reduced size in the cornea to introduce into the eye the material necessary for this ablation. It is therefore understandable that it is advantageous to have an intraocular implant which can be introduced into the interior of the eye and placed by the incision of reduced size which is only necessary during the operation of removal of the lens.

Avec les implants qui sont le plus souvent développés actuellement et qui sont réalisés en PMMA, c'est-à-dire en un matériau rigide, quelles que soient les précautions prises pour la réalisation des parties haptiques, l'incision doit nécessairement avoir une dimension suffisante pour laisser passer au moins la partie optique de l'implant dont le diamètre est de l'ordre de 6 mm.With the implants which are most often currently developed and which are produced in PMMA, that is to say in a rigid material, whatever the precautions taken for the realization of the haptic parts, the incision must necessarily have a dimension sufficient to allow at least the optical part of the implant, the diameter of which is around 6 mm, to pass.

Pour permettre de réduire encore les dimensions de l'implant dans la phase d'introduction à l'intérieur de l'oeil à travers l 'incision, on a déjà proposé de réaliser des implants à l'aide de matériaux souples et hydrophiles connus sous le nom de HYDROGEL. Grâce à la très grande souplesse de ce matériau il est possible de plier ou de rouler l'implant, y compris sa partie optique, pour lui faire traverser l'incision, l'implant reprenant sa forme et ses dimensions normales lorsqu'il est mis en place dans l'oeil.To further reduce the dimensions of the implant during the introduction phase inside the eye through the incision, has already proposed making implants using flexible and hydrophilic materials known as HYDROGEL. Thanks to the great flexibility of this material it is possible to fold or roll the implant, including its optical part, to make it pass through the incision, the implant resuming its normal shape and dimensions when it is put in place in the eye.

Cependant, en raison de sa très grande souplesse, la réalisation de la partie haptique de l'implant soulève des problèmes particuliers pour assurer une fixation et un positionnement convenable de l'implant à l'intérieur de l'oeil, notamment lorsque cet implant est mis en place dans le sac capsulaire. On comprend en particulier qu'il est nécessaire que la partie optique développe une force suffisante de maintien afin d'éviter les risques d'éjection de l'implant hors du sac capsulaire.However, because of its great flexibility, the production of the haptic part of the implant raises particular problems for ensuring proper fixation and positioning of the implant inside the eye, especially when this implant is placed in the capsular bag. It is understood in particular that it is necessary for the optical part to develop a sufficient holding force in order to avoid the risks of ejection of the implant out of the capsular bag.

Un objet de la présente invention est de fournir un implant intra-oculaire monobloc, notamment pour sac capsulaire et réalisé en un matériau souple qui comporte une partie haptique assurant un positionnement et un maintien de l'implant amélioré par rapport au solution de l'art antérieur.An object of the present invention is to provide a monobloc intraocular implant, in particular for a capsular bag and made of a flexible material which comprises a haptic part ensuring positioning and maintenance of the implant improved compared to the art solution. prior.

Pour atteindre ce but, l'implant intra-oculaire monobloc réalisé en un matériau souple et comportant une partie optique sensiblement circulaire et une partie haptique se caractérise en ce que ladite partie haptique comporte au moins deux éléments de fixation, chaque élément comportant une portion de contact destinée à venir en contact avec la paroi interne de l'oeil et deux bras de raccordement pour raccorder respectivement chaque extrémité d'une portion de contact à la périphérie de la partie optique, chaque portion de contact ayant sensiblement la forme d'un arc-de-cercle, la longueur de la corde sous-tendant ledit arc étant au moins égale au diamètre de la partie optique. Grâce à l'utilisation d'un matériau souple, la partie optique peut être pliée ou roulée pour faciliter l'insertion de l'implant dans l'oeil. Cependant, grâce notamment à la forme des portions de contact, l'implant est convenablement maintenu dans l'oeil, ce qui évite les risques d'éjection de l'implant lorsque celui-ci est mis en place dans le sac capsulaire.To achieve this goal, the monobloc intraocular implant made of a flexible material and comprising a substantially circular optical part and a haptic part is characterized in that said haptic part comprises at least two fixing elements, each element comprising a portion of contact intended to come into contact with the internal wall of the eye and two connection arms for respectively connecting each end of a contact portion to the periphery of the optical part, each contact portion having substantially the shape of an arc -de-circle, the length of the cord underlying said arc being at least equal to the diameter of the optical part. Thanks to the use of a flexible material, the optical part can be folded or rolled to facilitate the insertion of the implant into the eye. However, thanks in particular to the shape of the contact portions, the implant is properly held in the eye, which avoids the risks of ejection of the implant when it is placed in the capsular bag.

Selon une autre caractéristique de l'invention, une des faces de la partie haptique est définie par une portion de surface torique dont l'axe est l'axe de révolution de la partie optique. Ainsi lorsque l'implant est mis en place dans le sac capsulaire et soumis à une pression, les éléments de fixation sont soumis à un effet d'enroulement qui est similaire à l'effet de voûte que l'on rencontre dans les implants de type classique à anse non fermée en forme de C ou de J.According to another characteristic of the invention, one of the faces of the haptic part is defined by a portion of toric surface whose axis is the axis of revolution of the optical part. So when the implant is placed in the capsular bag and subjected to pressure, the fastening elements are subjected to a winding effect which is similar to the arch effect that is encountered in type implants. classic with non-closed handle in C or J shape.

Selon une autre caractéristique préférée de l'invention, chaque bras de raccordement a une épaisseur dans une direction perpendiculaire au plan de la partie optique qui va en augmentant depuis la périphérie de la partie optique vers la portion de contact et dont la largeur dans le plan de la portion optique va en diminuant de telle manière qu'on ait sensiblement une section constante desdits bras.According to another preferred characteristic of the invention, each connecting arm has a thickness in a direction perpendicular to the plane of the optical part which increases from the periphery of the optical part towards the contact portion and whose width in the plane of the optical portion decreases so that there is a substantially constant section of said arms.

Selon ce mode préféré de réalisation, on a ainsi un moment d'inertie sensiblement constant sur toute la longueur du bras, ce qui assure une déformation convenable de celui-ci sous l'effet des contraintes.According to this preferred embodiment, there is thus a substantially constant moment of inertia over the entire length of the arm, which ensures a suitable deformation of the latter under the effect of stresses.

D'autres caractéristiques et avantages de la présente invention apparaîtront mieux à la lecture de la description qui suit d'un mode de réalisation de l'invention donné à titre d'exemple non limitatif. La description se réfère aux figures annexées sur lesquelles:

  • la figure 1 est une vue en plan de l'implant intra-oculaire;
  • la figure 2 est une vue de côté de l'implant de la figure 1, et
  • la figure 3 est une vue de côté de l'implant montrant plus précisément la forme de la partie haptique.
Other characteristics and advantages of the present invention will appear better on reading the following description of an embodiment of the invention given by way of non-limiting example. The description refers to the appended figures in which:
  • Figure 1 is a plan view of the intraocular implant;
  • FIG. 2 is a side view of the implant of FIG. 1, and
  • Figure 3 is a side view of the implant showing more precisely the shape of the haptic part.

Comme le montre la figure 1, l'implant intra-oculaire comporte une partie optique 10 et deux éléments de fixation 12 et 14. La partie optique 10 est circulaire et de préférence son diamètre D est égal à 6 mm. La partie optique est constituée dans l'exemple représenté par deux surfaces convexes. A sa périphérie, la partie optique 10 a une épaisseur e qui est, dans l'exemple considéré, égale à 0,22 mm. L'ensemble de l'implant est réalisé en une seule pièce et de préférence en hydrogel.As shown in FIG. 1, the intraocular implant comprises an optical part 10 and two fixing elements 12 and 14. The optical part 10 is circular and preferably its diameter D is equal to 6 mm. The optical part is constituted in the example represented by two convex surfaces. At its periphery, the optical part 10 has a thickness e which is, in the example considered, equal to 0.22 mm. The entire implant is made in one piece and preferably in hydrogel.

Les deux éléments de fixation de la partie optique 12 et 14 sont identiques et sont symétriques par rapport à l'axe XX' passant par le centre O de la partie optique 10. On décrira donc uniquement l'élément de fixation 12 de la partie haptique. L'élément de fixation 12 est constitué par une portion de contact 16 et par deux bras de raccordement respectivement référencés 18 et 20 qui raccordent les extrémités 16a et 16b de la portion de contact à la périphérie de la partie haptique 10. On a représenté par C1, C2 la fibre neutre de la portion de contact. Celle-ci est bien sûr centrée au centre O de la partie optique et le diamètre externe correspondant D' est de préférence égal à 11 mm.The two fixing elements of the optical part 12 and 14 are identical and are symmetrical with respect to the axis XX 'passing through the center O of the optical part 10. We will therefore only describe the fixing element 12 of the haptic part . The fixing element 12 is constituted by a contact portion 16 and by two connection arms respectively referenced 18 and 20 which connect the ends 16a and 16b of the contact portion at the periphery of the haptic part 10. The neutral fiber of the contact portion is shown by C1, C2. This is of course centered at the center O of the optical part and the corresponding external diameter D 'is preferably equal to 11 mm.

Comme le montre mieux la figure 3, une des faces 12a, 14a des éléments de fixation 12, 14 est disposée sur une portion de surface torique T représentée en pointillés. Cette portion de tore est définie par la rotation d'un cercle de centre O' et de rayon R1 autour de l'axe ZZ'. Lors de cette rotation, le centre O' décrit un cercle de diamètre D3. De préférence, le rayon R1 est compris entre 5 et 30mm et le diamètre D3 est compris entre 5 et 30 mm.As best shown in Figure 3, one of the faces 12a, 14a of the fastening elements 12, 14 is disposed on a portion of the toric surface T shown in dotted lines. This torus portion is defined by the rotation of a circle with center O 'and radius R1 around the axis ZZ'. During this rotation, the center O 'describes a circle of diameter D3. Preferably, the radius R1 is between 5 and 30mm and the diameter D3 is between 5 and 30mm.

Selon une caractéristique de l'invention, la longueur de la corde C sous-tendant l'arc-de-cercle C1, C2 est au moins égale au diamètre D de la partie optique. Les bras de raccordement 18 et 20 partent tangentiellement de la périphérie 10a de la partie optique pour se raccorder également tangentiellement aux extrémités de la portion de contact 16 de façon à éviter tout point anguleux. Si l'on considère l'ensemble des deux bras 18 ou des deux bras 20, on voit que leur contour externe 24 ou 26 est concave et se raccorde tangentiellement à la périphérie 10a de la partie optique 10. On voit que les bras de raccordement 18 et 20 et de la portion de contact 16 délimitent une fenêtre 22 évidée. De préférence, l'épaisseur e de la portion de contact 16 dans une direction perpendiculaire au plan de la partie optique 10 est égale à 0,45 mm. On comprend qu'en conséquence les bras de raccordement ont une épaisseur qui va en augmentant depuis la périphérie 10a de la partie optique jusqu'aux extrémités 16a et 16b de la portion de contact 16. On voit également par la figure 1 que la largeur de chaque bras 18 ou 20 dans le plan de la partie optique 10 va en diminuant depuis la périphérie de la partie optique jusqu'aux extrémités de la portion de contact. On réalise ainsi des bras qui ont une section sensiblement constante, ce qui leur confère un moment d'inertie sensiblement constant sur toute leur longueur.According to a characteristic of the invention, the length of the cord C subtending the semicircle C1, C2 is at least equal to the diameter D of the optical part. The connection arms 18 and 20 leave tangentially from the periphery 10a of the optical part to also connect tangentially to the ends of the contact portion 16 so as to avoid any angular point. If we consider all of the two arms 18 or the two arms 20, we see that their external contour 24 or 26 is concave and is tangentially connected to the periphery 10a of the optical part 10. We see that the connection arms 18 and 20 and of the contact portion 16 define a hollowed-out window 22. Preferably, the thickness e of the contact portion 16 in a direction perpendicular to the plane of the optical part 10 is equal to 0.45 mm. It is understood that consequently the connection arms have a thickness which increases from the periphery 10a of the optical part to the ends 16a and 16b of the contact portion 16. It can also be seen in FIG. 1 that the width of each arm 18 or 20 in the plane of the optical part 10 decreases from the periphery of the optical part to the ends of the contact portion. Arms are thus produced which have a substantially constant section, which gives them a substantially constant moment of inertia over their entire length.

La présence des fenêtres évidées 22 procure au moins trois avantages. D'une part, elle facilite le pliage de l'implant autour du diamètre YY' de la partie optique constituant un axe de symétrie pour l'ensemble de l'implant. D'autre part, elle permet une déformation des portions de contact 16 qui peuvent ainsi s'adapter à des diamètres internes de l'oeil différents ou à la déformation du sac capsulaire du fait de l'ablation du cristallin. Enfin, ces fenêtres permettent la circulation de l'humeur aqueuse ou vitrée d'un côté à l'autre de l'implant.The presence of the hollowed out windows 22 provides at least three advantages. On the one hand, it facilitates the folding of the implant around the diameter YY 'of the optical part constituting an axis of symmetry for the whole of the implant. On the other hand, it allows a deformation of the contact portions 16 which can thus adapt to different internal diameters of the eye or to the deformation of the capsular bag due to the removal of the lens. Finally, these windows allow the circulation of aqueous or vitreous humor from one side to the other of the implant.

Dans la description précédente, la partie haptique est constituée par deux éléments de fixation. On ne sortirait pas de l'invention si la partie haptique était constituée par trois ou quatre ensembles de fixation. Dans tous les cas, les ensembles de fixation sont angulairement répartis sur la périphérie de la partie optique.In the preceding description, the haptic part is constituted by two fixing elements. We would not depart from the invention if the haptic part consisted of three or four fixing assemblies. In all cases, the fixing assemblies are angularly distributed over the periphery of the optical part.

Il faut ajouter que l'invention exploite seulement les propriétés de souplesse et de pliabilité de l'hydrogel et non ses propriétés hydrophiles. L'implant selon l'invention pourrait donc tout aussi bien être réalisé en un autre matériau souple tel que la silicone qui est également bien connue pour la réalisation d'implants intra-oculaires.It should be added that the invention exploits only the flexibility and pliability properties of the hydrogel and not its hydrophilic properties. The implant according to the invention could therefore equally well be made of another flexible material such as silicone which is also well known for the production of intraocular implants.

Claims (7)

Implant intra-oculaire monobloc réalisé en un matériau souple et comportant une partie optique (10) sensiblement circulaire et une partie haptique, caractérisé en ce que ladite partie haptique comporte deux éléments de fixation (12, 14), chaque élément comportant une portion de contact (16) destinée à venir en contact avec la paroi interne de l'oeil et deux bras de raccordement (18, 20) pour raccorder respectivement chaque extrémité (16a, 16b) de la portion de contact à la périphérie (10a) de la partie optique, chaque portion de contact ayant sensiblement la forme d'un arc-de-cercle (C1, C2) ayant sensiblement le même centre que la partie optique, la longueur de la corde soutendant ledit arc étant au moins égale au diamètre (D) de la partie optique.Monobloc intraocular implant made of a flexible material and comprising a substantially circular optical part (10) and a haptic part, characterized in that said haptic part comprises two fixing elements (12, 14), each element comprising a contact portion (16) intended to come into contact with the internal wall of the eye and two connection arms (18, 20) for respectively connecting each end (16a, 16b) of the contact portion to the periphery (10a) of the part optical, each contact portion having substantially the shape of an arc (C1, C2) having substantially the same center as the optical part, the length of the cord supporting said arc being at least equal to the diameter (D) of the optical part. Implant intra-oculaire selon la revendication 1, caractérisé en ce que une des faces (12a, 14a) de la partie haptique est définie par une portion de surface torique (T) ayant comme axe l'axe de révolution (ZZ') de la partie optique (10).Intraocular implant according to claim 1, characterized in that one of the faces (12a, 14a) of the haptic part is defined by a toric surface portion (T) having as axis the axis of revolution (ZZ ') of the optical part (10). Implant intra-oculaire selon l'une quelconque des revendications 1 et 2, caractérisé en ce que chaque bras de raccordement (18, 20) a une épaisseur selon une direction perpendiculaire au plan de l'optique qui va en augmentant depuis la périphérie (10a) de la partie optique jusqu'à la portion de contact (16) et une largeur dans le plan de l'optique qui va en diminuant de la périphérie de la partie optique vers ladite portion de contact.Intraocular implant according to either of Claims 1 and 2, characterized in that each connecting arm (18, 20) has a thickness in a direction perpendicular to the plane of the optics which increases from the periphery (10a ) from the optical part to the contact portion (16) and a width in the plane of the optics which decreases from the periphery of the optical part towards said contact portion. Implant intra-oculaire selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il est réalisé en hydrogel.Intraocular implant according to any one of Claims 1 to 3, characterized in that it is produced in hydrogel. Implant intra-oculaire selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il est réalisé en silicone.Intraocular implant according to any one of claims 1 to 3, characterized in that it is made of silicone. Implant intra-oculaire selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le diamètre externe des deux portions de contact (16) est de l'ordre de 11 mm.Intraocular implant according to any one of Claims 1 to 5, characterized in that the external diameter of the two contact portions (16) is of the order of 11 mm. Implant intra-oculaire selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le contour externe (24, 26) de deux bras de raccordement correspondants (18, 20) est concave et se raccorde tangentiellement au contour externe de la partie optique (10).Intraocular implant according to any one of Claims 1 to 6, characterized in that the external contour (24, 26) of two corresponding connection arms (18, 20) is concave and is tangentially connected to the external contour of the part optical (10).
EP93401744A 1992-07-16 1993-07-06 Soft intra-ocular implant lens Expired - Lifetime EP0579528B1 (en)

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FR9208811A FR2693649B1 (en) 1992-07-16 1992-07-16 Flexible intraocular implant.
FR9208811 1992-07-16

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EP0579528B1 EP0579528B1 (en) 1998-03-18

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AT (1) ATE164057T1 (en)
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FR2723691A1 (en) * 1994-08-22 1996-02-23 Philippe Crozafon INTRAOCULAR IMPLANT
FR2740969A1 (en) * 1995-11-13 1997-05-16 W K Et Associes FLEXIBLE INTRAOCULAR IMPLANT
FR2745711A1 (en) * 1996-03-05 1997-09-12 Ioltechnologie Production FLEXIBLE IMPLANT FORMING INTRAOCULAR LENS FOR POSTERIOR CHAMBER
FR2748200A1 (en) * 1996-05-03 1997-11-07 W K Et Associes FLEXIBLE MONOBLOCK INTRAOCULAR IMPLANT
RU2120255C1 (en) * 1996-05-13 1998-10-20 Волков Дмитрий Владимирович Intraocular lens
FR2765797A1 (en) * 1997-07-08 1999-01-15 Corneal Ind FLEXIBLE MONOBLOCK INTRAOCULAR IMPLANT
RU2134085C1 (en) * 1998-07-15 1999-08-10 Межотраслевой научно-технический комплекс "Микрохирургия глаза" Artificial crystalline lens
FR2776181A1 (en) * 1998-03-20 1999-09-24 Chauvin Opsia Flexible one-piece intraocular lens
FR2792825A1 (en) * 1999-04-30 2000-11-03 Ioltechnologie Production Intraocular implant for eye rear chamber for strong myopia comprises central optic part with convex rear face and concave front face and peripheral haptic part
FR2819713A1 (en) * 2001-01-25 2002-07-26 Corneal Ind Integral intraocular implant has optic with pair of haptics having arms with ends connected by cord of reduced width
EP1591080A1 (en) * 2004-04-30 2005-11-02 Humanoptics AG Intraocular Lens
US7569073B2 (en) 2004-12-29 2009-08-04 Bausch & Lomb Incorporated Small incision intraocular lens with anti-PCO feature
CN103655002A (en) * 2013-12-13 2014-03-26 无锡合众信息科技有限公司 Hydrogel intraocular lens and preparing method thereof
US9259308B2 (en) 2003-12-09 2016-02-16 Abbott Medical Optics Inc. Foldable intraocular lens and method of making
US9949822B2 (en) 1998-05-29 2018-04-24 Johnson & Johnson Surgical Vision, Inc. Intraocular lens for inhibiting cell growth and reducing glare

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US7615073B2 (en) 2003-12-09 2009-11-10 Advanced Medical Optics, Inc. Foldable intraocular lens and method of making

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EP0255759A1 (en) * 1986-07-02 1988-02-10 Iolab Corporation A soft intraocular lens
EP0289449A1 (en) * 1987-05-01 1988-11-02 Aziz Y. Anis Posterior chamber lens
SU1553109A1 (en) * 1987-06-30 1990-03-30 Всесоюзный Научно-Исследовательский Институт Глазных Болезней Artificial lens of eye
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Cited By (29)

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Publication number Priority date Publication date Assignee Title
FR2723691A1 (en) * 1994-08-22 1996-02-23 Philippe Crozafon INTRAOCULAR IMPLANT
EP0698381A1 (en) * 1994-08-22 1996-02-28 Philippe Crozafon Intraocular implant
US5609630A (en) * 1994-08-22 1997-03-11 Philippe Crozafon Intraocular implant
FR2740969A1 (en) * 1995-11-13 1997-05-16 W K Et Associes FLEXIBLE INTRAOCULAR IMPLANT
WO1997017915A1 (en) * 1995-11-13 1997-05-22 Corneal Laboratoires Flexible intraocular implant
FR2745711A1 (en) * 1996-03-05 1997-09-12 Ioltechnologie Production FLEXIBLE IMPLANT FORMING INTRAOCULAR LENS FOR POSTERIOR CHAMBER
FR2748200A1 (en) * 1996-05-03 1997-11-07 W K Et Associes FLEXIBLE MONOBLOCK INTRAOCULAR IMPLANT
WO1997041805A1 (en) * 1996-05-03 1997-11-13 Corneal Laboratoires Flexible intraocular implant formed in one piece
US6179870B1 (en) 1996-05-03 2001-01-30 Corneal Laboratoires Flexible intraocular implant formed in one piece
RU2120255C1 (en) * 1996-05-13 1998-10-20 Волков Дмитрий Владимирович Intraocular lens
WO1999002106A1 (en) * 1997-07-08 1999-01-21 Corneal Industrie Flexible single-piece intraocular implant
FR2765797A1 (en) * 1997-07-08 1999-01-15 Corneal Ind FLEXIBLE MONOBLOCK INTRAOCULAR IMPLANT
FR2776181A1 (en) * 1998-03-20 1999-09-24 Chauvin Opsia Flexible one-piece intraocular lens
WO1999048442A1 (en) * 1998-03-20 1999-09-30 Chauvin Opsia Flexible monobloc intraocular lens
US6409762B1 (en) 1998-03-20 2002-06-25 Chauvin Opsia, Z.A.C. Flexible monobloc intraocular lens
US9949822B2 (en) 1998-05-29 2018-04-24 Johnson & Johnson Surgical Vision, Inc. Intraocular lens for inhibiting cell growth and reducing glare
RU2134085C1 (en) * 1998-07-15 1999-08-10 Межотраслевой научно-технический комплекс "Микрохирургия глаза" Artificial crystalline lens
FR2792825A1 (en) * 1999-04-30 2000-11-03 Ioltechnologie Production Intraocular implant for eye rear chamber for strong myopia comprises central optic part with convex rear face and concave front face and peripheral haptic part
WO2001006955A1 (en) * 1999-04-30 2001-02-01 Ioltechnologie-Production Aphakic posterior chamber implant for high myopia
FR2819713A1 (en) * 2001-01-25 2002-07-26 Corneal Ind Integral intraocular implant has optic with pair of haptics having arms with ends connected by cord of reduced width
US9259308B2 (en) 2003-12-09 2016-02-16 Abbott Medical Optics Inc. Foldable intraocular lens and method of making
US9737396B2 (en) 2003-12-09 2017-08-22 Abbott Medical Optics Inc. Foldable intraocular lens and method of making
US10028822B2 (en) 2003-12-09 2018-07-24 Johnson & Johnson Surgical Vision, Inc. Foldable intraocular lens and method of making
US10420639B2 (en) 2003-12-09 2019-09-24 Johnson & Johnson Surgical Vision, Inc. Foldable intraocular lens and method of making
EP1591080A1 (en) * 2004-04-30 2005-11-02 Humanoptics AG Intraocular Lens
US7226479B2 (en) 2004-04-30 2007-06-05 Humanoptics Ag Intraocular lens
US7569073B2 (en) 2004-12-29 2009-08-04 Bausch & Lomb Incorporated Small incision intraocular lens with anti-PCO feature
US7931686B2 (en) 2004-12-29 2011-04-26 Bausch & Lomb Incorporated Small incision intraocular lens with anti-PCO feature
CN103655002A (en) * 2013-12-13 2014-03-26 无锡合众信息科技有限公司 Hydrogel intraocular lens and preparing method thereof

Also Published As

Publication number Publication date
ES2115740T3 (en) 1998-07-01
EP0579528B1 (en) 1998-03-18
FR2693649A1 (en) 1994-01-21
DE69317487T2 (en) 1998-10-01
DE69317487D1 (en) 1998-04-23
ATE164057T1 (en) 1998-04-15
FR2693649B1 (en) 1994-10-14

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